Shoe-stitcher attachment



April 24, 1928. 1,667,427

A. LUTSCHG SHOE STITCHER ATTACHMENT Filed May l8, 1927 Patented Apr. 24, 1928.

' 'UNITEDQTSTATES ABNOLD'LU'ISCHG, or GREAT BEND, xansAs.

SHOE-STITCHER ATTACHMENT.

Application filed MayiS,

The invention relates to channelling devices for shoe stitching machines, a and has for its object to provide a device of this character comprising a plate which may be easily and quickly attached to the bed plate of the machine below the presser foot and needle, and provided with a channelling knife which may be easily and quickly moved upwardly to channelling position ahead of the needle, whereby a channel will be cut in the shoe sole ahead of the needle during the stitching operation, thereby allowing the thread or stitching to be imbedded in thesole;

a A. further object is to provide the channel carrying plate with elongated recesses, one of which being below the needle for allowing the stitching operation and the other in alinement therewith,and in which the channelling knife is mounted, and which knife may bemoved upwardly to operative position, or downwardly to inoperative position when desired. r

A further object is to provide the under side of the knife carrying plate with a groove terminating at the rear side of the plate, and in which groove is rotatably mounted the knife shaft, which shaft terminates at its rear end in an angularly dis- 7 posed arm having a limited spring action and adapted to spring over lugs carried by the rear side of the plate for holding the knife in operative or inoperative positions.

With the above and other objects in view the invention resides in the combination and arrangement of parts as hereinafter set forth, shown in the drawing, described and claimed, it being understood that changes in the precise embodiment of the invent-ion may be made within'the scope of what is claimed without departing from the spirit of the invention.

In the drawing Figure 1 is a side elevation of a portion of a stitching machine, showing the device applied thereto. .7

Figure 2 is a front elevation of a portion of a stitching machine andthe channelling device. 1

Figure 3 is a front perspective View of the plate and channelling device.

Figure 4: is a rear perspective view of the plate and channelling device;

Figure 5 is a vertical transverse sectional view taken on line 55 of Figure 2.,

Referring to the drawing, the numeral 1 designates a portion of a conventional form 1927; swam. 192,199.

of shoe stitching machine and 2 the bed platethereof,and onwhich is mounted the channel carrying plate 3, by means of screws which passthrough the apertures 4: in the plate 3, howeverthis may vary as desired machine to which the device is applied. In. stltchlng machines as at present constructed, 1t 1s deslrable tochannel the sole in advance of the needle 6 so that the stitching will be imbedded in the sole where it will be protected, and to accomplish thisresult a vertically disposed channeling knife 7 is provided, and which knife may be of any shape or configuration, but IS in the same longitudinal plane as the needlefi, and in advance of the needle, whereby as thefsole is passed over the plate 3 under the presser foot,8;a channel willfbe formed thereinv in according tothe make'and type of stitching ably mounted in a channel 10, in the underside of the plate 3, therefore it avill be seen that the knife and its shaft may be easily and quickly removed from the" plate 3 for repair and replacement purposes. The rear end of the shaft 9 terminates in a right angularly disposed spring arm 11, in a hori zontal'plane and ata right angle to the knife 7, therefore it will be seen that when the arm 11 is moved to the position shown in Figure 4, under the lug 12, the knife 7 will be in raised operative position, and the arm Wlll engage the upper side of the bed plate 2 as. clearly shown in Figure 5, therefore it will beseen that as the shoe sole is passed under the presser foot 8, the channelling device oriknif'e 7 will form a channel therein in advance of the stitching operation.

1 The channelling knife 7 extends upwardly through an elongated'aperture 13 in the plate 3, which aperture ,is sufficiently long to allow the knife, whenthe arm 11 is moved one hundred and eighty degrees to alpositlOl'l'llIldGI the lug 14, to be received in the aperture 13 and recess 15 in the bed plate 2.

Disposed in alinement with the elongated aperture l3 is a needle'receiving aperture 15, which allows the needle to work in the usual manner. 1 I a 'From the above it will be seen'that a channelling device is provided for shoe stitchingmachines, which device is simple in construction, the parts reduced to a mini mum, may be easily and quickly applied,

and one which may be manufactured at a small cost and applied to stitching machines without varying the construction thereof.

lhe invention having been set forthwhat is claimed as new and useful is The combination with a stitching machine bed plate, a presser foot above said bed plate, a needle adjacent said presser foot and bed plate, of a channelling device, said device comprising a plate detachably connected to the bed plate, a shaft rotatably mounted in aehannel in the underside of the plate, said plate having elongated alined apertures in its outer end in alinement with the needle and through one of which the needle Works, alrnife carried by the shaft and disposed in the other elongated aperture, the other end of said shafft.terminating at the rear side of the plate in a right singularly disposed arm and lugs'carried bythe rear end of the plate at opposite sides of the shaft and under which the arm is received for holding the knife in operative or inoperative position as desired.

In testimony whereof Thereunto aflix my signature.

ARNOLD LUTSCHG. 

